Malicious PDF — malware analysis report

Static analysis result for SHA-256 edd213ff98b8248a…

MALICIOUS

PDF

75.9 KB Created: 2021-03-24 04:33:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: a5c910ed7bc10c45fcda3f3621696ce7 SHA-1: d81f155c62e6f94ab894fe5fb11bc8f12a7ba74d SHA-256: edd213ff98b8248a5ca4c5d77b876bfe9f67c28baebbfc4f9dee77db38691958
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded URLs and heuristics indicate it functions as a link farm, directing users to potentially malicious websites. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or scamming purposes by masquerading as a guide. No scripts were extracted, but the PDF structure and external links are indicative of a malicious lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://golowaki.ru/wix?keyword=nier+automata+ending+f+guide PDF link annotation
    • http://powajaxib.medianewsonline.com/how_to_make_your_boyfriend_a_gentleman.pdfIn PDF document text
    • https://mepanomelisegil.weebly.com/uploads/1/3/4/8/134899905/jebofeguburala.pdfIn PDF document text
    • https://cdn.sqhk.co/zubavagi/ghvjfia/96137381932.pdfIn PDF document text
    • http://ginalupajeriw.scienceontheweb.net/lotirisebetoxevif.pdfIn PDF document text
    • https://bovabesizepin.weebly.com/uploads/1/3/1/3/131383515/5e259b5.pdfIn PDF document text
    • https://dulupuwo.weebly.com/uploads/1/3/5/3/135393712/xaredafasekumu.pdfIn PDF document text
    • https://cdn.sqhk.co/fukafodifi/i3yjehh/47646383454.pdfIn PDF document text
    • https://kudilasiwutoxe.weebly.com/uploads/1/3/5/3/135314551/1cad08e567e19.pdfIn PDF document text
    • https://cdn.sqhk.co/lunabati/jDkQOhf/gejaxapoj.pdfIn PDF document text
    • https://cdn.sqhk.co/dewobube/ifhjGRZ/15325469020.pdfIn PDF document text
    • https://cdn.sqhk.co/vubiwete/BvgchaH/mad_truck_challenge_racing_hile_apk.pdfIn PDF document text
    • http://zevibeponakat.getenjoyment.net/ripejobawometalepexewofet.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wovugi/sohne_sohne_akhra_punjabi_song.pdfIn PDF document text
    • https://s3.amazonaws.com/jujojomojemiz/ziwetabutamolenakobob.pdfIn PDF document text
    • http://bapomel.epizy.com/kitchen_interior_design_website_templates.pdfIn PDF document text
    • http://vowafipefazasex.epizy.com/jutuxuladumed.pdfIn PDF document text
    • https://s3.amazonaws.com/lusabifef/2275052377.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ecd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECD9 4988 bytes
SHA-256: 1948685e97913899438d6dad45b2c06a99448537e513ebab7c594b6f34858ff2
font_01_sfnt_off0000fdc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDC5 10812 bytes
SHA-256: 00529c19a7352d5611161c5a37d404365fab4d4d6d8db56569c9947c9eb7cbb1

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